210112001211021 has 192 divisors, whose sum is σ = 358241995431936. Its totient is φ = 106660132300800.

The previous prime is 210112001210981. The next prime is 210112001211029. The reversal of 210112001211021 is 120112100211012.

It is a happy number.

It is not a de Polignac number, because 210112001211021 - 2⁹ = 210112001210509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210112001211029) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 15324331356 + ... + 15324345066.

It is an arithmetic number, because the mean of its divisors is an integer number (1865843726208).

Almost surely, 2^{210112001211021} is an apocalyptic number.

210112001211021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

210112001211021 is a deficient number, since it is larger than the sum of its proper divisors (148129994220915).

210112001211021 is a wasteful number, since it uses less digits than its factorization.

210112001211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14252 (or 14215 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 210112001211021 its reverse (120112100211012), we get a palindrome (330224101422033).

The spelling of 210112001211021 in words is "two hundred ten trillion, one hundred twelve billion, one million, two hundred eleven thousand, twenty-one".